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Multi-priority multi-channel media access control protocol based on channel perception

A medium access control, multi-priority technology, applied in the field of communication, can solve the problems affecting the timeliness, reliability, large transmission delay, unstable channel quality of information transmission, etc., to achieve full and efficient use of network bandwidth resources, low The effect of delay and high reliability QoS guarantee

Active Publication Date: 2018-02-02
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Problems solved by technology

The Media Access Control (MAC) protocol is one of the key technologies of the UAV Ad Hoc Network. It mainly solves the problem of how to efficiently share the communication channel between multiple UAVs, and is the main factor that determines the delay of information transmission. However, there are problems such as large transmission delay and unstable channel quality in UAV ad hoc networks, which affect the timeliness and reliability of information transmission, and put forward higher requirements for the MAC protocol.

Method used

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  • Multi-priority multi-channel media access control protocol based on channel perception
  • Multi-priority multi-channel media access control protocol based on channel perception
  • Multi-priority multi-channel media access control protocol based on channel perception

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] figure 1 It is the framework of multi-priority multi-channel MAC protocol based on channel state awareness. The figure includes four parts: multi-priority multi-queue scheduling mechanism, call admission control mechanism, backoff algorithm, and multi-channel dynamic allocation model.

[0034] The multi-priority multi-queue scheduling mechanism is to set M queues in the node, and each queue can be inserted into a priority group of a level, that is, the queue with priority 1 is inserted into the queue with sequence number 1, and the queue with priority 2 is inserted In the queue with sequence number 2.

[0035] figure 2 It is the state transition diagram of the protocol, and all nodes in the network work according to this state transition strategy. The specific state transition process can be described as:

[0036] 1) The node st...

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Abstract

The invention discloses a multi-priority multi-channel media access control protocol based on channel perception. N channels are divided into gamma dynamic reservation channels and N-gamma fixed shared channels; the fixed shared channels are equally shared by all groups having different priorities; the dynamic reservation channels reserve the channel number for various groups having different priorities according to the formula as shown in the specification, wherein m is the priority level of a current group; M is the total level number of the priorities; a formula is as shown in the specification, wherein lambda<T> represents the arrival rate of the total group; and lambda<m> represents the arrival rate of the current priority group. By means of the multi-priority multi-channel media access control protocol based on channel perception disclosed by the invention, sufficient channel resources can be ensured for high-priority services; and in addition, the overall channel utilization rate can be effectively increased.

Description

technical field [0001] The invention belongs to the field of communication technology, relates to a UAV ad hoc network communication networking protocol, and proposes a multi-priority multi-channel media access control protocol (Multi-Priority Multi-Channel Media Access Control, MPMC_MAC). technical background [0002] UAV self-organizing network adopts mobile Ad Hoc network (Mobile Ad Hoc Network, MANET) as the main network architecture. The networked cooperative combat capability of various aircraft has become one of the important development directions of the military aviation communication network in the future. The Media Access Control (MAC) protocol is one of the key technologies of the UAV Ad Hoc Network. It mainly solves the problem of how to efficiently share the communication channel between multiple UAVs, and is the main factor that determines the delay of information transmission. However, there are problems such as large transmission delay and unstable channel...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W16/12H04W36/00H04W36/26
CPCH04W16/10H04W16/12H04W36/0011H04W36/005H04W36/26
Inventor 仇启明方正薛晓亮
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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